The exhaust leak is from the air injection port just under the primary intake runners (the rectangular hole that has blow by around it in the later photo). This accepts air coming from the air pump via the air control valve you have blocked off on the inlet manifold. The air goes down and into the exhaust ports. So you have a direct path from the exhaust port to outside.

Second leak is above the primary intake runner. You will notice a large hole between the runner and two small holes over the port. They are the air bleed into the injector port. Basically air is drawn in at low rpm past the injector nozzles to help atomisation of the fuel at idle. It helps combustion stability at idle. Your gasket is not covering that either so you will be getting un-metered/un-filtered air into the engine.

I have attached a photo of a 12a turbo inlet manifold showing the air injection port at the bottom and the air bleed holes at the top (you can also see this on the photo of yours). Also attached is a photo of a 12a turbo inlet manifold gasket (You may meed to make one). Hope that helps.

Looks like Seaglen was right, got the new intake gasket on, a dry set of plugs on and she no longer blows! - thank you very much for the spotting that issue. Also replaced the positive battery terminal as it was getting abit loose.

So, I need to check the handbrake as that isn't holding very well and only just scraped through the last MOT, I'm thinking probably the caliper seized (had to do both the rears on my Prelude a few months back) but I'll adjust it first and see.

Then, the not so small task of turning my raised garage entrance into a ramp so I can get it in and out quickly. Currently it's a two man ramp and planks job which is a little nerve racking.

Of course, the weather will now take a nose dive, but at least she should be good for next year.

Gives me time to get the Watanabe's powder coated, I've got 6 samples of metallic bronze coming in the post so I can get it just right, will report back once they arrive.

Also thinking of doing a rear wiper delete to tidy up the back end. Always little improvements to be made.